This page describes an image The eclipsed Moon sets near the Rochetta di Prendera, Dolomiti Unesco, by Alessandra Masi, Italy

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Caption: First place in the 2021 IAU OAE Astrophotography Contest, category Total lunar eclipse.

A lunar eclipse occurs when the full moon moves into the Earth`s shadow. This is the case when the Sun, Earth and Moon are exactly or very closely aligned. The reddish light reflected from the lunar surface is caused by sunlight that has been refracted on its way through Earth´s atmosphere in the direction of the Moon. It appears reddish because of the Rayleigh scattering of bluer light. The round shape of the Earth's shadow visible on the lunar surface was a proof for Aristotle that the Earth must be a sphere. This photo shows the eclipsed Moon that sets near the Rochetta di Prendera, Dolomiti Unesco, Italy, on 21 January 2019.

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Credit: Alessandra Masi/IAU OAE
DOI: 10.5281/zenodo.5419146
Related glossary terms: Lunar Eclipse , Moon , Total Lunar Eclipse
Categories: Naked Eye Astronomy

License: Creative Commons Attribution 4.0 International (CC BY 4.0) Creative Commons Attribution 4.0 International (CC BY 4.0) icons

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Caption: Primo posto al concorso di astrofotografia IAU OAE 2021, categoria Eclissi lunare totale.

Un'eclissi lunare si verifica quando la luna piena entra nell'ombra della Terra. Ciò avviene quando il Sole, la Terra e la Luna sono esattamente (o quasi) allineati. La luce rossastra riflessa dalla superficie lunare è causata dalla luce solare che è stata rifratta nel suo percorso attraverso l'atmosfera terrestre in direzione della Luna. Appare rossastra a causa della dispersione di Rayleigh della luce più blu. La forma rotonda dell'ombra terrestre visibile sulla superficie lunare per Aristotele dimostrava che la Terra doveva essere una sfera. Questa foto mostra la Luna in eclisse che tramonta vicino alla Rochetta di Prendera, Dolomiti Unesco, Italia, il 21 gennaio 2019.
Credit: Alessandra Masi/IAU OAE
Related glossary terms: Eclissi lunare , Eclissi lunare totale , Luna
Caption translation status: Approved by a reviewer
Caption translators: Giuliana Giobbi, Valentina La Parola
Caption reviewers: Silvia Casu, Rodolfo Canestrari, Raffaella Ferretti